In Spain, apart from the grant application, you have to write countless reports that take a lot of time, do endless bureaucracy to hire people or buy things, justify every expenditure. Probably you also need to hunt for a second simultaneous fellowship because typically they're too small to do meaningful research. And all this is on top of teaching, and endless evaluations where you need to submit various versions of your CV and supporting documentation (we often have 2-4 such evaluations a year). When all is said and done, time for actual research tends to zero. We live off PhD students who don't have to do all that.

The UK seems considerably better (much less bureaucracy and fewer hours of teaching) but still, you probably need to do reports and stuff on top of the grant applications.